The handheld plastic extrusion welding gun is a welding device that melts PE and PP welding rods evenly through a hot air blower and extrudes them to weld with the base material. It is composed of an imported German host and Swiss blower, a newly designed screw, a forced feeding screw, and an automatic cutting system. The host has a high power, with an extrusion capacity of up to 3kg, and stable performance. The preating fan and screw extruder are integrated in design, ensuring good plasticization quality. The mold design is smooth and unobstructed, without dead corners orization phenomena. The Swiss blower provides a large airflow and sufficient heat, ensuring that the base material has a high temperature before bonding, making the melting effect strong inseparable. The unique design of the screw extrusion part achieves a compression ratio of 2.5:1, making the extrusion more uniform and efficientThe handheld plastic extrusion welding gun is ergonomically designed, with a small size and light weight. It offers high welding strength, good sealing effect, highization output, and fast speed. It can complete welding in one go and is particularly suitable for on-site construction in the field.